Deep-well-pump head



Mar. 20. 1923. 1,449,028 J. I. ASTROM DEEP WELL PUMP HEAD Filed July '5, 1921 3 MM!!! Q N Patented Mar. 20, 1923.

UNITED STATES PATENT OFFICE.

JOHN I. ASTBOM, OF FORTWAYNE. INDIANA, ASSIGNOR TO FORT WAYNE ENGI- NEERING & MANUFACTURING (30., OF FORT WAYNE, INDIANA, A CORIPORA TION OF INDIANA.

Application filed July 5, 1921.

To all whom it may concern:

Be it known that I, JOHN I. AsTRoM, a citizen of the United States, and resident of Fort lVayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Deep-Nell- Pump Heads; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to newand useful improvements in head structures for pumps, and adapted more particularly for deep well pumps, similar to that which is disclosed in my former United States Patent Number 1,241,604.

The object of my present invention is to provide a structure of the class described in which the crank motion is so modified that a retarded movement is given the pump rod at the beginning of its up and down stroke, whereby more time is given for the opening and closing of the pump cylinder valves, thereby resulting in a more quiet valve action and longer life of the valves and valve seats.

A further object of my invention resides in the combination of two separate motions,

, operating in different directions, and so arranged that the objectionable inertia stress es causing vibrations of the moving parts are greatly reduced.

It is still a further object of my invention to provide a pump head so arranged that the means for imparting motion to the pump rod or underground parts can be readily and easily moved or disconnected in order to withdraw the same fro-m the well without the usual necessity of moving the pump head upon its foundation. This is a disadvantage that is common in all pump heads of the character referred to and it is my object to overcome this with the structure hereinafter referred to and illustrated in the accompanying drawings, in which Figure 1 is a vertical sectional view taken on the line ll of Figure Figure 2 is a side elevational view of my lmDI'OXGCI pump head, and

Figure 3 is a front elevation of the same.

Referring now, more particularly to the accompanying drawings, the numeral 1 designates a cast metal base plate provided in one end with a suitable passage to receive therethrough the vertically extending pump rod 2. The base plate 1 is further provided,

DEEP-WELL-PUMP HEAD.

Serial No. 482,354.

adjacent the end having the pump rod, with a pair of spaced sockets into which the lower ends of vertically extending tubular columns 3 are mounted, the upper ends of which are provided with hearing blocks 4, adapted to receive therein the end portions of a transrsely and horizontally disposed crank shaft 5. One end of the crank shaft 5 projects through its bearing block and its projection is provided with a gear wheel 6, the latter meshing with a smaller gear 7, keyed to the end of a shaft 8, which is supported by suitable sleeve bearings 9 clamped about the vertically extending columns 3 and adjacent the bearing blocks 4. The other end of the shaft 8 has keyed thereto a suitable driving element, preferably a belt wheel 10, by which the shaft is driven.

The structure hereinbefore referred to is similar in operation to that disclosed in my former patent.

Slidably mounted upon the vertically extending columns 3, and between the base plate 1 and the sleeve bearings 9, is a pair of sleeves 11 which are connected by a cross rod 12,this structure constituting what I shall hereinafter refer to as the cross head.

The crank shaft 5 has journaled on its intermediate or crank portion, a pitman 13, the lower end of which is provided with a suitable bearing head to receive therein the cross rod 12 of the cross head.

The pitman 13 is further provided with an extension 14 arranged at right angles to its lower extremity, the end of which is bifurcated and expanded in a common plane to form a fork between which the pump rod 2 operates.

The sleeves 11 of the cross head are further connected on the side adjacent the pump rod by a vertically disposed Ushaped member 15, the legs of which are secured to the sleeves by suitable bolts or the like 16. The intermediate portion or base of the U member has made integral therewith a horizontally extending block 17. the same serving as a guide element for the upper end of the pump rod.

The upper end of the pump rod 2 has mounted thereon and retained by a nut 18, a cross head 19. the end portions of which are provided with suitable extensions adapted to receive thereon for oscillatory movement the links 20, the lower ends of which are connected in a similar manner upon out- \i'ardly projecting pins or bosses carried by the furcations formed on the extension 14 of the pitman. The links are retained thereon by suitable locking means, such as a nut or a cotter pin.

Referring to the drawings. it will be noted that the length of the extension 14 is equivaalent to the distance from the pump rod to the cross rod 12, the purpose of which will be more fully apparent as the description of of operation proceeds.

Briefly summarizing, the operation of my improved pump head is as follows: Assuming that the crank shaft 5 is rotating in the direction as indicated by the arrow. and that the varimis parts are in position as illus trated in Figure i. As the movement of tlie crank shaft 5 takes place the cross head 11 will more \"ertically upon the columns 3, due to its connection with the. crank shaft by the hell crank formed by the arms 13 and 14, the latter being connected by links to the pump -rod. As the crank shaft 5 continues to move the cross head 11 will be moved upwardly until the crank within the shaft nearly approaches its highest point, thus further movement of the cross head is stopped at which time the pitman l3 swings over one side of its perpemlicular to the other. As the action just described takes place the pump rod is accordingly moved. Prior to the actual movement of the pitman l3 :icross its perpendicular the cross head 11 has reached such a position that the belt crank. carried thereby, will swing; upon its connections with the crank 33 and the links 20 and during; this movement no motion is imparted to the pump rod. After this movement has taken place, the crank moves to such a posit-hm that a slight dmvnt'ard movement of the cross head takes place. Thus it will be noted by reason of the links connected to the bell crank that the pump rod and the peculiar movement imparted to the bell crank. the. pump rod is caused to dwell at the begia'm'ing of its up and down Strokes.

Therefore, it will he noted that the combination of movements caused by the regular crank motion and the swinging motion of the bell crank at the end of its short arm. gives the desired motion to the pump rod which l claim as the salient feature of my invention.

Furthermore. it will be noted that by reason of this novel structure, the paits oi' the operatiiru means or that part which is directly above the well can be readily disconnected and thrown out of the wayu thus permitting the pulling out of the underground parts without the usual necessity of removin; the pump head or shifting it upon its ase. I

From the foregoing, itis thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, with out further description, and it will be un derstood that various changes in the size, shape. proportion and minor details of construction may be resorted to Without departinn i'rom the spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claimas new, and desire to secure by Letters Patent, is

1. A pump of the class described comprisin; a base, and a, pump rod extending therethrough, means for actuating said pump rod mounted upon said base, said means includin; a bell crank and its various connecting elements whereby a dwell is caused in the movement of said pump and at the beginning of its up and down stroke.

2. it pump of the class described comprising a base having a pair of members extend iug vertically therefrom and a pump rod passing therethrough, a crank shaft journaled on said members, a cross head slidable on said members, a pitman connecting said cross head and crank shaft and having an extension connected by links to said pump rod for causing a dwell in the movement oi said rod at the beginning of its stroke.

ii. A pump-of the class described comprisinn a base plate and uprights mounted thereon, a pump rod extending therethrough. a crank shaft journaled on said uprights. a cross head slidaible on said uprights, a bell crank having one leg connected to said crank shaft and the other connected by links to said pump rod while its angle portion is connected to said cross head all of which is adapted to cause a dwell in the movement of the pump red at the beginning or" its stroke,

4. A deep well pump head coinprising a base and uprights mounted thereon, a crank shalt transversely journally carried by the upper ends of said uprights, a cross head slidably mounted on the uprights, a drive shaft carried by said uprights and intermeshing gears on the drive and crank shafts and a bell crank connected to said cross head and crank shaft and pump rod for causing a dwell in the movement of said pump rod for the purpose set forth.

In testimony that I claim the foregoing l have hereunto set mydiand at Fort Wayne, in the county of Allen andState of Indiana.

JOHN r. ASTROM. 

